How monitoring and control maximize photovoltaic benefits – HVAC Dubai Blog

The integration of renewable energy sources and storage in buildings generates additional needs for control and monitoring, not only to assure optimal operation but also to obtain a return of investment as quickly as possible.


Monitor to understand your energy production and usage, detect problems early, and take appropriate actions

To understand how electrical energy is being used and how it can be optimized, owners should:

  • Track how the photovoltaic (PV) energy produced is being consumed by the loads, stored, or injected to the grid
  • Follow and analyze the trends of the PV production alongside the loads’ consumption
  • Calculate economic benefits related to the diminished consumption of energy from the grid

Asset management features should also be provided by a PV monitoring system. This should include assessment of PV system performance, detection of drifts or malfunctions, and immediate notification about faults. Also, because PV inverters can affect the power quality of the electrical installation, it is recommended that power quality disturbances be measured and followed, especially harmonics and unbalance.

Control to operate local sources and loads depending on constraints and objectives

When integrating local sources such as a PV system into a building electrical installation, control functions are often required. These functions will depend mainly on the available local sources, on the contract with the local energy supplier, and on the type of installation: grid-connected, microgrid-type, or off grid.

For example, for an installation with grid-connected PV production, the required control functions could include:

  • limiting PV production in order to not inject power to the grid
  • managing power factor at the point of grid connection to avoid penalties
  • shifting loads to the period of PV production to maximize self-consumption
  • participating in demand response, especially when storage or generators are also part of the installation

If we take the example of a microgrid type, additional control functions are required because the control system should ensure the transition from grid-connected mode to off-grid mode and vice versa, as well as the balance between electrical consumption and local electrical energy production in off-grid mode.

Using advanced analytics to optimize use of local sources

Advanced cloud-based analytics enable further optimization of the usage of local electricity production, which achieves additional economic savings.

By considering complementary criteria such as changing electricity tariffs, weather forecasts, and expected consumption, advanced analytics provide the optimal system configuration. A set point for each local source is further transmitted to the local control system.

A digital architecture fulfills monitoring, control, and optimization functions

Now, let’s review the digital architecture that can meet these requirements.

photovoltaic production

Example of digital architecture for installation with photovoltaic production

First, you need to collect input data, such as:

  • Photovoltaic production and inverter status, from the PV inverters
  • Power measurements, energy usage, and power quality data, from the power meters.
  • Information on weather conditions, such as temperature and irradiance, provided by sensors.

These data are collected using communication networks. High-end power measurement devices and PV inverters are usually connected directly through Ethernet. For sensors and other devices, gateways may be needed.

For monitoring purposes only, the data acquisition frequency can be every 10 minutes on average. But when local control functions are required, the data should be collected more frequently.

The collected data are used by an on-premises control system to operate the electrical installation equipment effectively and efficiently. Algorithms and analytics can provide optimal set points for the local energy sources and controllable loads.

The collected data also are used by on-premises or cloud-based software for visualization, analysis, and reporting.

To learn more about monitoring recommendations for photovoltaic installations integrated in buildings, watch this video on photovoltaic self-consumption.

This video is part of a series prepared by Schneider Electric’s technical communication group that addresses various aspects of PV system design, installation, and operation.  You can also download our EcoStruxure™ Power Digital Applications Design Guide.

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Benefits of Soft Starters - All You Need to Know - Schneider Electric Blog

Benefits of Soft Starters – All You Need to Know – HVAC Dubai Blog

Industrial Software

A soft starter can be explained as a device used with motors to reduce the load and torque during startup for a temporary period. It makes use of a gradually increasing voltage to the motors which often results in smooth acceleration of the motor and coupled load. It offers a linear power slope which also enables smooth acceleration, which in turn, reduces in rush currents along with the excessive wear on mechanical driven elements. The starter also contains a valuable provision to adjust the starting voltage and acceleration time. This can be chosen to suit different applications.

The areas of application for soft starters include:

  • Steel industries (Rolling mills and processing lines)
  • Power sector
  • Rubber and plastic
  • Paper and pulp
  • Sugar plants
  • Water supply scheme
  • Machine tool applications
  • Cement industries
  • Textile industries

The benefits of soft starters can be elaborated on as follows:

  • A soft starter ensures smooth and uniform starting by torque control for gradual acceleration of the drive system which goes on to help in preventing jerks. This extends the life of mechanical components and reduces their maintenance requirements.
  • A significant reduction in starting current to achieve break-away, along with holding back the current during acceleration. Soft starters also play significant roles in preventing mechanical, electrical, thermal weakening of the electrical equipment such as motors, cables, transformers & switchgear.
  • Improvement of motor starting duty by lowering the temperature rise in stator windings and supply transformer.
  • The microprocessor version of the soft starter possesses a software controlled response at full speed which helps in economizing energy, whatever may be the load. Due to the tendency of over specifying the motor rated power, this feature has merits for most installations- not only in the case of varying loads.
  • Soft starters facilitate power factor correction as well – it is a self monitoring inbuilt feature. When the motor is operating at less than full load, the relative reactive component of current drawn by the motor is redundantly excessive due to magnetizing and associated losses. Therefore the voltage dependent losses are negligible with the load proportional active current component and as a result the power factor also improves side-by-side.

#Schneider Electric is a leading brand manufacturing soft starters along with other motor control devices. The brand has established its presence all across the globe with offerings in the realms of electrical management, motor control, home automation, smart technology, and electrical protection. Some other prominent offerings include electrical switchgearmedium voltage switchgears, MCB’s, PLC’s, and HMI’s.

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Enjoy the Benefits of a Filter Change

Enjoy the Benefits of a Filter Change

Changing your air filter is one of the best things you as a homeowner could do for your heater, full stop. While it might not be the be-all-end-all for any heating problem, it can definitely provide relief for your system if it’s dealing with efficiency problems or a decrease in effectiveness.

Today, we’re going to talk about what a filter change in your heater can do and when you should look outward to a member of our team for anything requiring professional attention. For instance, heater maintenance in Rocky River, OH can be a great boon to your heater’s efficiency when combined with the replacement of an air filter in your heater, ensuring the system is working properly and consuming only as much energy as it needs to.

So, if you’re interested in seeing what you can do for your heater as a homeowner, keep reading below!

The Benefits

Changing your air filter provides unique benefits to your wallet and heating system that homeowners often forget about. While scheduling maintenance or a repair might be a hassle, a filter change is something that is simple, easy, and is supposed to be done by a homeowner like yourself! So, let’s see what you can expect to enjoy from changing your filter.

  • Extend your system’s lifespan. When you replace the air filter in your heating system, you’re allowing it to function effectively and efficiently, which will reduce the wear and tear on interior components. By doing this every 1–3 months, the chances your system lives up to its full potential will drastically increase.
  • Lower heating bills. When your filter is dirty, your heater has to consume more energy and work harder just to pull in the right amount of air to warm. Replacing your air filter can help reduce the amount of fuel that’s consumed by the heater and overall reduce the cost of your monthly bills. If this isn’t an incentive to change your filter, then we don’t know what is!
  • Improve the air quality of your home. While it’s not the main function of your heater’s air filter, it can definitely help improve the air quality of your home when it is changed. Reduce the amount of dust, debris, and pet dander that is in your air by changing the heater’s air filter today.
  • Peace of mind. Don’t you want to know you did everything you could to help your heater work? It doesn’t feel very good to know you’ve neglected such an expensive system that you and your family depend so heavily on. That’s why changing your air filter can help you feel better knowing you’re actively making the situation better and trying, and succeeding, to keep your heater healthy.

Call the Pros

Need help locating or replacing your air filter? Or perhaps you have some other questions about your heater? That sounds like the perfect opportunity to contact your local HVAC professionals. Luckily, we’re available to help you where you need it, so you don’t have to worry about finding someone reliable. We’re right here!

Call the team at – Heating & Air Conditioning to have your heating problems solved.

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6 Benefits of Having HVAC Rooftop Units

6 Benefits of Having HVAC Rooftop Units

HVAC rooftop units are packaged systems with all components contained in a single unit. This differentiates it from the conventional setup that has an indoor and outdoor unit. Besides the lower installation cost, there are several advantages of using an HVAC rooftop unit for your building:

Efficient use of energy. A commercial HVAC setup provides additional controls, including energy-saving options. Features like air volume control, dampers, and energy recovery wheels economize and improve its performance. Installing an automatic thermostat allows synchronization of operation based on seasonal changes and occupancy schedules.

Adaptability. Since rooftop HVAC units are modular, you can easily adjust to the changing demands of your building. You can add a new air conditioner module or subtract an old one based on the heating requirements of the building. Furthermore, you can redesign the set up without replacing the whole system.

Security. Placing the HVAC system on top of the roof provides an added deterrence to theft and vandalism. Its elevated location also protects the mechanism from litter, dirt, dust and other debris that may cause accidental damage, reducing the need for air conditioning maintenance.

Optimized space. With all components in the same area, rooftop HVAC units allow the use of ground space for other purposes., enabling you to maximize every square foot of your building for business and comfort.

Reduced noise pollution. HVAC systems for commercial use require a certain setup, one which emits extreme noise. Placing it on the rooftop reduces the intrusion of unwanted sound into the building.

Ease of maintenance: Professional air conditioning maintenance is necessary to keep your system reliable at all times. Having all the components in one place allows technicians easy access for air conditioner repairs and maintenance.

Contact Dependable Heating & Air Conditioning now for an HVAC system repair, upgrade or maintenance visit. Call us at (707) 446-1511 or (800) 794-1003 toll free.  You can also fill out our contact form and set up an appointment.

The post 6 Benefits of Having HVAC Rooftop Units appeared first on Dependable Heating & Air Conditioning.

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